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Product details

Parameters

Common mode voltage (Max) (V) 26 Common mode voltage (Min) (V) -0.3 Input offset (+/-) (Max) (uV) 150 Input offset drift (+/-) (Typ) (uV/C) 0.1 Gain (V/V) 100, 200, 50 Gain error (%) 1.5, 1 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 100 Bandwidth (kHz) 80, 30, 14 Supply voltage (Max) (V) 26 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.115 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, Low-side Capable Rating Automotive Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

SOT-SC70 (DCK) 6 4 mm² 2 x 2.1 open-in-new Find other Current sense amplifiers analog output

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • Wide common-mode range: –0.1 V to 26 V
  • Offset voltage: ±150 µV (maximum)
    (enables shunt drops of 10-mV full-scale)
  • Accuracy:
    • Gain error (maximum over temperature):
      • ±1% (C version)
      • ±1.5% (B version)
    • Offset drift: 0.5-µV/°C (maximum)
    • Gain drift: 10-ppm/°C (maximum)
  • Choice of gains:
    • INA199x1-Q1: 50 V/V
    • INA199x2-Q1: 100 V/V
    • INA199x3-Q1: 200 V/V
  • Quiescent current: 100 µA (maximum)
  • Package: 6-pin SC70

All trademarks are the property of their respective owners.

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Description

The INA199-Q1 is a voltage-output, current-sense amplifier that can sense drops across shunts at common-mode voltages from –0.1 V to 26V, independent of the supply voltage. Three fixed gains are available: 50V/V, 100V/V, and 200V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10-mV full-scale.

This device operates from a single 2.7-V to 26-V power supply, drawing a maximum of 100 µA of supply current. All gain options are specified from –40°C to +125°C, and are offered in a 6-pin SC70 package.




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Technical documentation

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Type Title Date
* Datasheet INA199-Q1 Automotive, 26-V, Bidirectional, Zero-Drift, Low-Side or High-Side, Voltage-Output, Current-Shunt Monitor datasheet (Rev. D) Aug. 20, 2019
Application note External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) Feb. 19, 2019
Application note Precision current measurements on high-voltage power-supply rails (Rev. C) Feb. 19, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application note Low-drift, low-side, bidirectional current sensing circuit with integrated preci Jun. 28, 2018
Selection guide Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application note Low-Side Current Sense Circuit Integration Mar. 30, 2017
Application note Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
User guide INA199B1-B3EVM User's Guide Hardware Version 2 Jul. 08, 2016
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016
White paper Overcurrent protection enables more efficient and reliable systems May 16, 2016
Technical articles How to get started with current sense amplifiers – part 2 May 26, 2015
User guide INA199A1-A3EVM User's Guide Hardware Version 1 May 13, 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
25
Description

The INA199B1-B3 devices are voltage output, high-side measurement, bi-directional, zero-drift current

shunt monitors. The INA199EVM is intended to provide basic functional evaluation of this device family.  The fixture layout is not intended to be a model for the target circuit, nor is it laid (...)

Features
  • Evaluation of all gain options through provided device
  • Ease of access to device pins with test points
  • Space for optional input filtering capacitors and resistors
  • Multiple input signal options


Design tools & simulation

SIMULATION MODEL Download
SBOM925.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOM926.TSC (252 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOM927.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOM928.TSC (253 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOM929.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOM930.TSC (253 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOMBC1.ZIP (24 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBC8.ZIP (24 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBD0.ZIP (24 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)

Reference designs

REFERENCE DESIGNS Download
Three Phase AC Current Measurements Using Current Transformer Reference Design
TIDA-00753 The TIDA-00753 reference design demonstrates high accuracy wide range AC current measurement for a three phase motor using the INA199 zero drift current shunt monitor. The design also has low power consumption of 25mW for Gain stage of 200 as compared to a discrete solution. The design footprint and (...)
document-generic Schematic
REFERENCE DESIGNS Download
60W Synchronous Boost LED Driver Reference Design for Automotive Application
TIDA-00748 TIDA-00748 is a 60W Synchronous Boost Design for automotive LED application utilizing the Synchronous Boost Converter LM5122-Q1.  This design applies to automotive lighting for exterior lighting such as headlights and taillights and also interior LED lighting systems. The design accepts an (...)
document-generic Schematic
REFERENCE DESIGNS Download
Current Shunt Monitor with Transient Robustness Reference Design
TIDA-00302 This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.

Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)

document-generic Schematic
Design files

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 6 View options

Ordering & quality

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